AviGlitch

AviGlitch destroys your AVI files.

I can't explain why they're going to destroy their own data, but they do.

You can find a short guide at http://ucnv.github.com/aviglitch/.
It provides a way to manipulate the data in each AVI frames.
It will mostly be used for making datamoshing videos.
It parses only container level structure, doesn't parse codecs.